Excerpt from Manual of Conchology; Structural and Systematic, Vol. 2: With Illustrations of the Species; Zonitidæ
Animal protected by a spiral, heliciform shell, within which it is completely retractile; tail provided with a caudal mucus pore; jaw with a median inferior projection, not ribbed; the central tooth in the lingual ribbon is tricuspid, with the middle cusp long and narrow, laterals bicuspid, marginals acuminate, unicuspidate or bicuspidate.
Shell usually heliciform and perforate or umbilicate, often thin, and more or less transparent, the lip of the aperture sim ple, neither reflected nor with thickened margin.
The family thus defined includes several hundred species, usually considered Helices, but which differ from that group in the generally thinner, more translucent shells, the aperture with simple margin; the genuine Helices being generally thicker, and with the margin of the aperture either reflected or thickened Within.
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Paperback. Condition: New. Print on Demand. This book explores the genus Nanina, a group of land snails distributed across Africa, Asia, and the Pacific Islands. The author provides a comprehensive classification of the genus, examining its physical characteristics, geographical distribution, and evolutionary relationships. Each species is described in detail, with an analysis of its unique features, habitat, and behavior. The book also delves into the diversity and complexity of the genus, exploring the various adaptations and specializations that have allowed Nanina to thrive in a wide range of ecosystems. Through its rigorous scientific approach and wealth of information, this book offers valuable insights into the biology, ecology, and evolution of these fascinating mollusks. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9781332154524_0
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781332154524
Quantity: 15 available